I might have walked past this one without taking notice a hundred times. It’s on the slab right in front of the IQ Fit building on the south side of East Michigan Avenue, between Francis and Mifflin. The concrete is in especially bad shape here, patched repeatedly with asphalt, so it is lucky that this stamp survives. It is undated, but could date to the construction of the adjacent building in 1959.
I have actually encountered this stamp just one other time, on the front walk of a house on South Pennsylvania, though only the word Basile was legible. Looking back at that one, the placement does suggest another word was probably worn away in front, so it probably also read Bond Basile. Unfortunately, I know nothing of the contractor, despite searching.